cd-pa1616d gnss patch antenna module data sheet v4 cd-pa1616d data sheet 1.2 features built-in...

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CD-PA1616D Data Sheet

CD-PA1616D GNSS patch antenna module

Data Sheet V.05

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Table of Contents

1. Functional Description ........................................................................................................... 3 1.1 Product description ...................................................................................................... 3 1.2 Features ........................................................................................................................ 4 1.3 System Block Diagram .................................................................................................. 5 1.4 Multi-tone active interference canceller ...................................................................... 5 1.5 1PPS .............................................................................................................................. 5 1.6 AGPS Support for Fast TTFF (EPO™) ............................................................................. 5 1.7 AlwaysLocate™ (Advance Power Periodic Mode) ........................................................ 6 1.8 EASY™ ........................................................................................................................... 6 1.9 Embedded Logger function .......................................................................................... 6

2. Specifications ......................................................................................................................... 7 2.1 Mechanical Dimension ................................................................................................. 7 2.2 Recommended PCB pad Layout ................................................................................... 8 2.3 Pin Configuration .......................................................................................................... 8 2.4 Pin Assignment ............................................................................................................. 9 2.5 Description of I/O Pin ................................................................................................. 10 2.6 Specification List ......................................................................................................... 12 2.7 Absolute Maximum Ratings ........................................................................................ 13 2.8 Operating Conditions .................................................................................................. 13 2.9 GNSS External Antenna Specification (Recommended) ............................................. 13

3. Protocols ..............................................................................................................................14 3.1 NMEA Output Sentences ............................................................................................ 14 3.2 Antenna Status Command Protocols .......................................................................... 22 3.3 MTK NMEA Command Protocols …………………………………………………………………………… 22

4. Reference Design ..................................................................................................................23 4.1 Reference Design Circuit ............................................................................................. 23

5. Reflow Soldering Note ..........................................................................................................24 6.Tape Reel Packing Information ...............................................................................................25

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1. Functional Description 1.1 Product description

The CDTop CD-PA1616D module utilizes the MediaTek new generation GNSS Chipset MT3333 that support various location and navigation applications, including autonomous GPS, GLONASS, GALILEO, QZSS, SBAS(note) ranging (WAAS, EGNOS, GAGAN, MSAS),QZSS,DGPS(RTCM) and AGPS. It support up to 210 PRN channels with 99 search channels and 33 simultaneous tracking channels.

It is the industry’s highest level of sensitivity (-165dBm) and instant Time-to-First Fix (TTFF). Precise GNSS signal processing give the ultra-precise positioning under low receptive, high velocity conditions. Up to 12 multi-tone active interference canceller (ISSCC2011 award), customer can have more flexibility in system design.

Power management design makes CD-PA1616D easily integrated into your system without extra voltage regulator. CD-PA1616D allows direct battery connection, no need any external LDO and gives customers plenty of choices for their application circuit.

The excellent low power consumption of CD-PA1616D make it easier to applied to power sensitive

devices, especially portable applications, need not worry about operating time anymore and user can get more fun.

It also combined with many advanced features including AlwaysLocate™, EASY™, EPO™, and logger function. Application: Asset management Handheld Device M2M application Security industry Surveillance Tablet PC/PLB/MID

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1.2 Features

Built-in 15x15x4.0mm ceramic patch antenna on the top of module

Ultra-High Sensitivity: -165dBm (w/o patch antenna), up to 45dB C/N of SVs in open sky reception.

AlwaysLocate: Intelligent Algorithm (Advance Power Periodic Mode) for power saving

EASY: Self-Generated Orbit Prediction for instant positioning fix

GPS Consumption current(@3.3V):

Acquisition: 34mA Typical

Tracking: 29mA Typical

High accuracy 1-PPS timing support for Timing Applications (±20ns jitter)

High Update Rate: up to 10Hz(note1)

Logger function Embedded(note2)

Supports QZSS, SBAS(WAAS, EGNOS, GAGAN, MSAS) ranging

Ultra-High Sensitivity: -165dBm

Automatic antenna switching function

Antenna Advisor function

Note 1: SBAS can only be enabled when update rate is less than or equal to 5Hz. Note2: Some features need special firmware or command programmed by customer.

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1.3 System Block Diagram

Figure 1-1: System Block Diagram.

1.4 Multi-tone active interference canceller Because different application (Wi-Fi , GSM/GPRS,3G/4G,Bluetooth )are integrated into navigation

system , the harmonic of RF signal will influence the GPS reception , The multi-tone active interference canceller (abbr: MTAIC ) can reject external RF interference which come from other active components on the main board , to improve the capacity of GPS reception without any needed HW change in the design .CD-PA1616D can cancel up to 12 independent channel interference continuous wave (CW).

1.5 1PPS A pulse per second (1 PPS) is an electrical signal which precisely indicates the start of a second with the

accuracy of ±20ns RMS (Root Mean Square). The PPS signal is provided through a designated output pin for many external applications. The pulse is not only limited to being active every second but is also allowed to set up the required duration, frequency, and active high/low through a programmable user-defined setting.

1.6 AGPS Support for Fast TTFF (EPO™) The AGPS (EPO™) supply the predicated Extended Prediction Orbit data to speed TTFF ,users can

download the EPO data to GPS engine from the FTP server by internet or wireless network ,the GPS engine will use the EPO data to assist position calculation when the navigation information of satellites are not enough or weak signal zone .

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1.7 AlwaysLocate™ (Advance Power Periodic Mode) Embedded need to be executed fully all the time, the algorithm can be set by different necessary to

decide the operation level of GPS function, reduce power consumption, it will suffer positing accuracy to get the target of power saving and extend the usage time of product.

Figure 1-2: Always Locatie

1.8 EASY™ The EASY™ is embedded assist system for quick positioning, the GPS engine will calculate and predict

automatically the single ephemeris ( Max. up to 3 days )when power on, and save the predict information into the memory , GPS engine will use these information for positioning if no enough information from satellites, so the function will be helpful for positioning and TTFF improvement under indoor or urban condition, the Backup power (VBACKUP) is necessary.

Figure 1-3 EASY System operation

Please refer to the Fig 1-3, When GPS device great the satellite information from GPS satellites, the GPS engine automatically pre-calculate the predict orbit information for 3 days. The GPS device still can quickly do the positioning with EASY™ function under weak GPS signal.

1.9 Embedded Logger function(LOCUS) The Embedded Logger function(LOCUS) don’t need host CPU (MCU ) and external flash to handle the

operation , GPS Engine will use internal flash (embedded in GPS chipset ) to log the GPS data (Data format : UTC, Latitude , longitude, Valid ,Checksum ), the maximum log duration is up to two days under AlwaysLocate™.

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2. Specification 2.1 Mechanical Dimension

Dimension: (Unit: mm, Tolerance: +/- 0.2mm)

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2.2 Recommended PCB pad Layout

(Unit: mm, Tolerance: 0.1mm)

2.3 Pin Configuration

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2.4 Pin Assignment

Pin Name I/O Description & Note

1 VCC PI Main DC power input

2 NRESET I Reset Input, Low Active

3 GND P Ground

4 VBACKUP PI Backup Power Input for RTC & Navigation Data Retention

5 3D-FIX O 3D-Fix Indicator

6 NC -- Not Connect

7 NC -- Not Connect

8 GND P Ground

9 TX O Serial Data Output for NMEA Output (UART TTL)

10 RX I Serial Data Input for Firmware Update (UART TTL)

11 EX_ANT I

PO External active antenna RF input. DC power from VCC and provide for external active antenna.

12 GND P Ground

13 1PPS O 1PPS Time Mark Output 2.8V CMOS Level

14 RX1

(I2C_SCL) I I

Serial Data Input 1

I2C Serial clock (by custom firmware)

15 TX1

(I2C_SDA) O O

Serial Data Output 1

I2C Serial data (by custom firmware)

16 NC -- Not Connect



19 GND P Ground


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2.5 Description of I/O Pin Pin1, (VCC)

The main DC power supply of the module, the voltage should be kept between from 3.0V to 4.3V. The Vcc ripple must be controlled under 50mVpp (Typical: 3.3V)

Pin2, (NRESET) With a low level, it causes the module to reset. If not used, keep floating.

Pin3, 8, 12, 19, (GND) Ground1

Pin4, (VBACKUP) This connects to the backup power of the GPS module. Power source (such as battery) connected to this pin will help the GPS chipset in keeping its internal RTC running when the main power source is removed. The voltage should be kept between 2.0V~4.3V, Typical 3.0V. If VBACKUP power was not reserved, the GPS module will perform a lengthy cold start every time it is powered‐on because previous satellite information is not retained and needs to be re‐ transmitted. If not used, keep floating.

Pin5, (3D-FIX) The 3D_FIX is assigned as a fix flag output. The timing behavior of this pin can be configured by custom firmware for different applications (Example: waking up host MCU). If not used, keep floating. Before 2D Fix

The pin should continuously output one-second high-level with one-second low-level signal

After 2D or 3D Fix The pin should continuously output low-level signal

Pin6, 7, 17, 18, 20, (NC) This pin is not connected, keep floating. Pin9, (TX)

This is the UART transmitter of the module. It is used for aiding. If not used, keep floating.

Pin10, (RX) This is the UART receiver of the module. It is used for aiding. If not used, keep floating.

1s

1s

Low

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Pin11, (EX_ANT) DC power from VCC and provide for external active antenna (Recommendation: 3.3V). When a 4mA or higher current is detected, the detect circuit will acknowledge the external antenna as being present and uses external antenna for reception. If not used, keep floating. In the event of short circuit occurring at external antenna, the module will limit the drawn current to a safe level. The 3.0V for the GNSS external antenna is limited to 25mA. The 3.3V for the GNSS external antenna is limited to 28mA. The 3.6V for the GNSS external antenna is limited to 31mA.

Pin13, (1PPS) This pin provides one pulse-per-second output from the module and synchronizes to GPS time. Keep floating if not used.

Pin14, (RX1) or (I2C_SCL) This is the UART1 receiver of the module. It is used for aiding. If not used, keep floating.

This pin can be modified to I2C_SCL through firmware customization, it received the clock for I2C application, if not used keep floating.

Pin15, (TX1) or (I2C_SDA) This is the UART1 transmitter of the module. It is used for aiding. If not used, keep floating.

This pin can be modified to I2C_SDA through firmware customization, it output the data for I2C application, if not used keep floating.

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2.6 Specification List

Item Description

GNSS Solution MTK MT3333

Frequency GPS L1, 1575.42MHz GLONASS L1, 1598.0625~1605.375MHz

Sensitivity(GPS portion)

Acquisition: -148dBm, cold start Reacquisition: -163dBm Hot start Tracking: -165dBm

SV Number

#1~32 for GPS #65~96 for GLONASS #1~36 for Galileo #193~195 for QZSS #33~51 for SBAS

TTFF (No. of SVs>4, C/N>40dB, PDop

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2.7 Absolute Maximum Ratings The voltage applied for VCC should not exceed 4.3VDC.

2.8 Operating Condition

2.9 GPS/GLONASS External Antenna Specification(Recommended) It is important that the antenna gets a clear view of the sky and is positioned on a surface level to the horizon for

best results. The following specification has to meet for the use reference design.

Characteristic Specification

Polarization Right-hand circular polarized

Frequency Received 1.575GHz~1.615GHz

Power Supply 3.3V

DC Current 3mA < IDC < 30mA at 3.3V

Total Gain + 25dBi

Output VSWR < 2.5

Impedance 50Ω

Noise Figure < 1.5dB

Symbol Min. Typ. Max. Unit

Power Supply Voltage VCC 3.0 3.3 4.3 V

Backup battery Voltage VBACKUP 2.0 3.0 4.3 V

Condition Min. Typ. Max. Unit

Operation supply Ripple Voltage －－－ 50 mVpp

RX0 TTL H Level Vcc=3.0~4.3V 2.0 － Vcc V

RX0 TTL L Level Vcc=3.0~4.3V 0 － 0.8 V

TX0 TTL H Level Vcc=3.0~4.3V 2.4 － 2.8 V

TX0 TTL L Level Vcc=3.0~4.3V 0 － 0.4 V

Current consumption @3.3V, 1Hz update rate

Acquisition － 34 － mA

Tracking － 29 － mA

Backup power consumption @ 3V 250C － 18 － µA

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3. Protocols

3.1 NMEA Output Sentences

Table-1 lists each of the NMEA output sentences specifically developed and defined by MTK for use within MTK products

Table-1: Each of the NMEA output sentences

Option Description

GGA Time, position and fix type data.

GSA GNSS receiver operating mode, active satellites used in the position solution and DOP values.

GSV The number of GNSS satellites in view satellite ID numbers, elevation, azimuth, and SNR values.

RMC Time, date, position, course and speed data. Recommended Minimum Navigation Information.

VTG Course and speed information relative to the ground.

Table-2: NMEA Output Sentence for GPS and GNSS

System GGA GSA GSV RMC VTG

GPS GPGGA GPGSA GPGSV GPRMC GPVTG

GNSS (GPS+GLONASS)

GNGGA GPGSA GLGSA

GPGSV GLGSV

GNRMC GNVTG

GNSS (GPS+GLONASS+Galileo)

GNGGA GPGSA GLGSA GAGSA

GPGSV GLGSV GAGSV

GNRMC GNVTG

Note: GP is a short term of “GPS”; GL is “GLONASS”; GA is “Galileo” and GN is “multi-system” Default setting for GPS+GLONASS output, the GPS + GLONASS + Galileo need custom firmware and suggest work baud rate is 115,200bps.

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GGA—Global Positioning System Fixed Data. Time, Position and fix related data

Table-3 contains the values for the following example： $GNGGA,165006.000,2241.9107,N,12017.2383,E,1,14,0.79,22.6,M,18.5,M,,*42

Table-3: GGA Data Format

Name Example Units Description

Message ID $GNGGA GGA protocol header

UTC Time 165006.000 hhmmss.sss

Latitude 2241.9107 ddmm.mmmm

N/S Indicator N N=north or S=south

Longitude 12017.2383 dddmm.mmmm

E/W Indicator E E=east or W=west

Position Fix Indicator 1 See Table-4

Satellites Used 14 Range 0 to 14

HDOP 0.79 Horizontal Dilution of Precision

MSL Altitude 22.6 meters Antenna Altitude above/below mean-sea-level

Units M meters Units of antenna altitude

Geoidal Separation 18.5 meters

Units M meters Units of geoids separation

Age of Diff. Corr. second Null fields when DGPS is not used

Checksum *42

End of message termination

Table-4: Position Fix Indicator

Value Description

0 Fix not available

1 GPS fix

2 Differential GPS fix

Note: When inputting the command $PMTK353,0,1,0,0,0*2A, $GNGGA will change to $GLGGA (For GLONASS). When inputting the command $PMTK353,1,0,0,0,0*2A, $GNGGA will change to $GPGGA (For GPS)

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GSA—GNSS DOP and Active Satellites

Table-5 contains the values for the following example： $GPGSA,A,3,06,02,05,17,19,09,12,193,194,195,,,1.19,0.66,0.99*34 $GLGSA,A,3,65,66,88,87,81,67,,,,,,,1.19,0.66,0.99*13 $GAGSA,A,3,19,04,11,12,,,,,,,,,1.19,0.66,0.99*15

Table-5: GSA Data Format


Message ID $GPGSA or $GLGSA or $GAGSA

GSA protocol header

Mode 1 A See Table-6

Mode 2 3 See Table-7

Satellite Used 06 SV on Channel 1

Satellite Used 02 SV on Channel 2

.... …. …. ....

Satellite Used SV on Channel 12

QZSS satellite 193 Range 193 ~ 195

PDOP 1.19 Position Dilution of Precision

HDOP 0.66 Horizontal Dilution of Precision

VDOP 0.99 Vertical Dilution of Precision

Checksum *34


Table-6: Mode 1

Value Description

M Manual—forced to operate in 2D or 3D mode

A 2D Automatic—allowed to automatically switch 2D/3D

Table-7: Mode 2

Value Description

1 Fix not available

2 2D (＜4 SVs used)

3 3D (≧4 SVs used)

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GSV— Satellites in View, includes GPS(GPGSV),GLONASS(GLGSV) and Galileo(GAGSV)

Table-8 contains the values for the following example： $GPGSV,4,1,15,195,59,162,39,05,53,288,45,42,51,129,36,02,49,348,41*4E $GPGSV,4,2,15,19,49,149,42,06,42,065,43,13,29,187,37,12,24,254,33*75 $GPGSV,4,3,15,17,23,149,50,09,14,041,32,25,09,294,37,30,08,119,36*7E $GPGSV,4,4,15,07,05,090,29,193,,,40,194,,,38*45

Table-8: GPGSV Data Format


Message ID $GPGSV GSV protocol header

Number of Messages

4

Range 1 to 4 (Depending on the number of satellites tracked, multiple messages of GSV data may be required.)

Message Number1 1 Range 1 to 4

Satellites in View 15

Satellite ID 195 Channel 1 (Range 1 to 32) Note: 193~ 195 for QZSS

Elevation 59 degrees Channel 1 (Maximum 90)

Azimuth 162 degrees Channel 1 (True, Range 0 to 359)

SNR (C/No) 39 dBHz Range 0 to 99,(null when not tracking)

.... …. …. ....

Satellite ID 07 Channel 4 (Range 1 to 32)



SNR (C/No) 29 dBHz Range 0 to 99, (null when not tracking)

Checksum *4E


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Table-9 contains the values for the following example：

$GLGSV,2,1,07,66,65,356,38,81,57,004,36,88,52,108,34,67,48,235,36*66 $GLGSV,2,2,07,82,13,332,,87,11,134,26,65,10,029,19*54

Table-9: GLGSV Data Format


Message ID $GLGSV GSV protocol header

Number of Messages 2 Range 1 to 4 (Depending on the number of satellites tracked, multiple messages of GSV data may be required.)







.... …. …. ....





Checksum *54


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Table-10 contains the values for the following example： $GAGSV,2,1,06,04,79,161,42,12,59,058,38,11,38,332,35,19,36,042,32*6B $GAGSV,2,2,06,24,10,226,,25,06,272,*69

Table-10: GAGSV Data Format


Message ID $GAGSV GSV protocol header

Number of Messages 2 Range 1 to 4 (Depending on the number of satellites tracked, multiple messages of GSV data may be required.)







.... …. …. ....




SNR (C/No) dBHz Range 0 to 99,(null when not tracking)

Checksum *6D


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RMC—Recommended Minimum Navigation Information Table-11 contains the values for the following example： $GNRMC,064951.000,A,2307.1256,N,12016.4438,E,0.03,165.48,260406,3.05,W,A*2C $GNRMC,155503.000,A,5606.1725,N,01404.0622,E,0.04,0.00,110918,,,D*75

Table-11: RMC Data Format


Message ID $GNRMC RMC protocol header

UTC Time 155503.000 hhmmss.sss

Status A A=data valid or V=data not valid

Latitude 5606.1725 ddmm.mmmm

N/S Indicator N N=north or S=south

Longitude 01404.0622 dddmm.mmmm

E/W Indicator E E=east or W=west

Speed over Ground 0.04 knots

Course over Ground 165.48 degrees True

Date 260406 ddmmyy

Magnetic Variation 3.05, W degrees E=east or W=west

Mode A A= Autonomous mode D= Differential mode E= Estimated mode

Checksum *2C


Note: when inputting the commend $PMTK353,0,1,0,0,0*2A , $GNRMC will change to $GLRMC (for GLONASS). When inputting the commend $PMTK353,1,0,0,0,0*2A : $GNRMC will change to $GPRMC (for GPS).

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VTG—Course and speed information relative to the ground Table-12 contains the values for the following example: $GNVTG,352.70,T,,M,0.07,N,0.13,K,A*25

Table-12: VTG Data Format


Message ID $GNVTG VTG protocol header

Course 352.70 degrees Measured heading

Reference T True

Course degrees Measured heading

Reference M Magnetic

Speed 0.07 knots Measured horizontal speed

Units N Knots

Speed 0.13 km/hr Measured horizontal speed

Units K Kilometers per hour

Mode A A= Autonomous mode D= Differential mode E= Estimated mode

Checksum *25


Note: when inputting the commend $PMTK353,0,1,0,0,0*2A , $GNVTG will change to $GLVTG(For GLONASS). When inputting the commend $PMTK353,1,0,0,0,0*2A : $GNVTG will change to $GPVTG (For GPS).

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3.2 Antenna Status Command Protocols(Antenna Advisor)

PCD—Status of antenna Table-13 contains the values for the following list: $PCD,11,value*checksum Example: $PCD,11,1 *66 $PCD,11,2 *65 $PCD,11,3 *64 Value: 1=> Using Internal Antenna

2=> Using Active Antenna 3=> Active Antenna Shorted

Table-13 PCACK Data format


Message ID $PCD Protocol header

Command ID 11 Function Type

Reference 3 True

Enable Antenna Status command:

$CDCMD,33,1*7C Disable Antenna Status command:

$CDCMD,33,0*7D

3.3 MTK NMEA Command Protocols

Packet Type: 103 PMTK_CMD_COLD_START

Packet Meaning:

Cold Start：Don’t use Time, Position, Almanacs and Ephemeris data at re-start.

Example: $PMTK103*30

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4. Reference Design

This chapter introduces the reference schematic design for the best performance. Additional tips and cautions on design are well documented on Application Note, which is available upon request.

4.1 Reference Design Circuit a). UART + RTCM application

b). UART + I2C application

Note: 1. Ferrite bead L1 is added for power noise reduction. 2. C1 and C2 bypass should be put near the module. 3. Damping resistors R2,R3,R4 could be modified based on system application for EMI. 4. If you need more support and information on antenna implementation, please directly contact us at

[email protected] for further services.

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5. Reflow Soldering Note

Cautionary Notes on Reflow-Soldering Process:

1. Module must be pre-baked before going through SMT solder reflow process. 2. The usage of solder paste should follow “First-in-First out” principle. Opened solder paste needs to be

monitored and recorded in a timely manner (refer to IPQC standards for related documentation and examples).

3. Temperature and humidity must be controlled within SMT production line and storage area. Temperature of 23°C, 60±5% RH humidity is recommended. (please refer to IPQC standards for related documentation and examples)

4. When performing solder paste printing, please notice if the amount of solder paste is in excess or insufficient, as both conditions may lead to defects such as electrical shortage, empty solder and etc.

5. Make sure the vacuum mouthpiece is able to bear the weight of the GNSS module to prevent positional shift during the loading process.

6. Before the PCBA is going through the reflow-soldering process, the operators should check with his/her own eyes to see if there are positional offset to the module.

7. The reflow temperature and its profile data must be measured before the SMT process and match the levels and guidelines set by IPQC.

8. If SMT protection line is running a double-sided process for PCBA, please process GNSS module during the

second pass only to avoid repeated reflow exposures of the GNSS module. Please contact CDTop beforehand if

you must process GNSS module during the 1st pass of double-side process.

X

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6. Tape Reel Packing Information

One Reel : 250pcs

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Pin 1 position

Feed direction

cd-pa1616d gnss patch antenna module data sheet v4 cd-pa1616d data sheet 1.2 features built-in...

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